All the Ediacaran creatures were diploblastic, meaning they were built from two layers of tissue.
埃迪亚卡拉动物都是双胚层的，即它们由两层组织构成。
英语百科
Diploblasty
（重定向自Diploblastic）
Diploblasty is a condition of the blastula in which there are two primary germ layers: the ectoderm and endoderm.
Diploblastic organisms are organisms which develop from such a blastula, and include cnidaria and ctenophora, formerly grouped together in the phylum Coelenterata, but later understanding of their differences resulted in their being placed in separate phyla.